The OAC Series line of compactors provide solutions with superior power and efficiency for all your compaction tasks, and help ensure you meet Proctor soil density requirements. A new OAC300A-24 is equipped with 23.7" (603 mm) wide tamper plate and Oil-Filled Design (No greasing required.) OAC300-24 is for compaction only; use as pile/post drivers or extractors is prohibited.